"The whole country is worried about black money. It is an anti-national activity. For bringing back this black money, you require a political will. I give an assurance to my countrymen that when we will form a government in Delhi, we will create a task force and if necessary will amend the laws," the BJP's prime ministerial candidate said as he launched the party's much-hyped "Chai pe charcha with NaMo" (a discussion over tea with Modi) campaign.